CN106435706A - Electrochemical polishing method for magnesium metal component - Google Patents
Electrochemical polishing method for magnesium metal component Download PDFInfo
- Publication number
- CN106435706A CN106435706A CN201510472215.8A CN201510472215A CN106435706A CN 106435706 A CN106435706 A CN 106435706A CN 201510472215 A CN201510472215 A CN 201510472215A CN 106435706 A CN106435706 A CN 106435706A
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- Prior art keywords
- magnesium
- hardware
- organic
- electrolyte
- anode
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H3/00—Electrochemical machining, i.e. removing metal by passing current between an electrode and a workpiece in the presence of an electrolyte
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F3/00—Electrolytic etching or polishing
- C25F3/16—Polishing
- C25F3/18—Polishing of light metals
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Materials For Medical Uses (AREA)
Abstract
The invention discloses an electrochemical polishing method for a magnesium metal component. The electrochemical polishing method comprises the following steps of firstly, putting an anode and a cathode into an organic magnesium electrolyte solution, wherein the anode is the magnesium metal component; and then, applying an electrolysis voltage between the anode and the cathode to obtain a polished magnesium metal component. The organic electrolyte solution comprises a solvent selected from a group consisting of ethyl ether, tetrahydrofuran, 2-methyl tetrahydrofuran and cyclopentyl methyl ether, and an organic magnesium electrolyte selected from a group consisting of methyl magnesium chloride, ethyl magnesium chloride, phenyl magnesium chloride, alkoxy magnesium bromide and alkoxy magnesium chloride. The electrochemical polishing method for the magnesium metal component disclosed by the invention has the advantages of saving time, saving labor, and being suitable for fine magnesium metal components.
Description
Technical field
The present invention relates to a kind of electrochemical polishing method, the electrochemistry throwing of more particularly, to a kind of magnesium hardware
Light method.
Background technology
Magnesium hardware, because having that lightweight, specific strength is high, thermal diffusivity is good, electromagnetism shade is good,
The characteristic such as shock resistance is good and recyclability is good, is widely used in transportation, electronic product in recent years
And in the field of implantable medical device.In order to can ensure that magnesium hardware can have good quality and essence
Whole surface, needs magnesium hardware is carried out Metallographic Analysis and surface finish is processed, and in carrying out metallographic
When analysis and surface finish are processed, need respectively the metallographic specimen and rough-wrought product of magnesium hardware to be entered
Row mechanical polishing, to obtain the surface of clearly metallograph and finishing respectively.
However, common mechanical polishing is to be reached in the way of artificial, except suitable expend time and manpower with
Outward, magnesium hardware also often cannot be made to have uniform finish because of human error.And it is mechanical
The mode of polishing is dfficult to apply to accurate and tiny magnesium hardware, for example, medically used
Magnesium alloy intravascular stent, not only size is little also has considerably complicated shape for it, therefore cannot pass through
The mode of mechanical polishing reaches the purpose of surface finish process.
Content of the invention
In view of the shortcoming of above-mentioned prior art, it is an object of the invention to saving the polishing of magnesium hardware
The time of required consuming and manpower, and fine magnesium hardware is polished.
For reaching aforesaid goal of the invention, the technological means that the present invention is taken are for providing a kind of magnesium metal
The electrochemical polishing method of component, its step comprises：
One anode and a negative electrode are positioned in an organic-magnesium electrolyte, this anode is a magnesium hardware；
And
Apply a decomposition voltage between anode and this negative electrode, obtain a polished magnesium hardware；
Wherein, this organic-magnesium electrolyte includes a solvent and an organic-magnesium electrolyte, and this solvent is selected from
The group of following composition：Ether (ethyl ether), oxolane (tetrahydrofuran), 2- methyl tetrahydrochysene furan
Mutter (2-methyl tetrahydrofuran) and methyl cyclopentane ether (cyclopentyl methyl ether), and this is organic
Magnesium eletrolysis matter is the group selected from following composition：Methyl-magnesium-chloride (methyl magnesium chloride),
Ethylmagnesium chloride (ethyl magnesium chloride), phenyl-magnesium-chloride (phenyl magnesium
Chloride), bromination alkoxyl magnesium (alkoxy magnesium bromide) and alkoxy magnesium chloride (alkoxy
magnesium chloride).
It is preferred that in the organic-magnesium electrolyte of 1 liter (L), organic-magnesium electricity in this organic-magnesium electrolyte
The mole number of solution matter is between 1.0 moles (mole) to 2.0mole.
It is preferred that this organic-magnesium electrolyte includes a supporting electrolyte, this supporting electrolyte is chlorination
Aluminum.
More preferably, in the organic-magnesium electrolyte of 1L, the mole number of this supporting electrolyte is between 0.05
Between mole to 0.15mole.
It is preferred that on the basis of the entirety of this magnesium hardware, this magnesium hardware contains 90.00
Magnesium more than percentage by weight (wt%).
More preferably, on the basis of the entirety of this magnesium hardware, this magnesium hardware contains 90.00
The magnesium of wt% to 99.00wt%.
This negative electrode is rustless steel (stainless steel), the al member of the aluminum containing more than 99.90wt% or contains
The stannum component of the stannum of more than 99.90wt%.
It is preferred that in this is positioned over this organic-magnesium electricity as magnesium hardware and this negative electrode of anode
Step in solution liquid, and apply this decomposition voltage in this as between the magnesium hardware of anode and this negative electrode
To obtain between the step of this polished magnesium hardware, further include covering one noble gases in
The step on the surface of this organic-magnesium electrolyte.
It is preferred that described this decomposition voltage of applying is between this anode and this negative electrode, to obtain this through throwing
The step of the magnesium hardware of light comprises：
Under the operating temperature of normal pressure and 30 DEG C to 40 DEG C, apply this decomposition voltage and 25 milliamperes/
Square centimeter (mA/cm2) to 50mA/cm2Electric current density [by this decomposition voltage is adjusted to 3 volts
(V) to 10V decomposition voltage] between this anode and this negative electrode, to obtain this polished magnesium metal structure
The step of the magnesium metal of part and a reduction.
In the described method preparing magnesium metal, described normal pressure is 1 atmospheric pressure (atm).
Based on above-mentioned, the electrochemical polishing method of described magnesium hardware is in electrochemical polish mode to magnesium system
Hardware is polished, and can reach time and the people saving to be manually polished required consuming simultaneously
Power, and the advantage that fine magnesium hardware is polished.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as to the present invention's
Limit.
Brief description
Fig. 1 is the flow chart of the electrochemical polishing method of magnesium hardware of the present invention；
Fig. 2 is the anode of the electrochemical polishing method of magnesium hardware of embodiments of the invention 1, the moon
Pole and the configuration schematic diagram of electrolyte；
Fig. 3 is the anode of the electrochemical polishing method of magnesium hardware of embodiments of the invention 2, the moon
Pole and the configuration schematic diagram of electrolyte；
Fig. 4 is the magnesium metal of the electrochemical polishing method of magnesium hardware of embodiments of the invention 2
The three-dimensional appearance schematic diagram of component (anode).
Specific embodiment
Below in conjunction with the accompanying drawings the structural principle and operation principle of the present invention is described in detail：
Hereinafter, embodiments of the present invention will be described in detail by specific examples below, affiliated technology neck
Domain tool usually intellectual can understand, via the content of this specification, the advantage that the present invention can reach easily
With effect, and carry out under without departing from the spirit various modify with change, with implement or application this
The content of invention.
Embodiment 1
Refer to Fig. 1 and Fig. 2, the electrochemical polishing method of the magnesium hardware of the present embodiment is as described below.
In the present embodiment, the magnesium hardware 10 being used is a metallographic specimen containing the magnesium of 98wt%.
First, as described in step S1, using this magnesium hardware 10 as anode and this magnesium system is golden
Metal elements 10 and a negative electrode 20 are positioned in an organic electrolyte 30.In the present embodiment, this negative electrode 20
For rustless steel；This organic-magnesium electrolyte 30 includes a solvent, an organic bath and a supporting electrolyte,
This solvent is the oxolane of 1L, and this organic bath is ethylmagnesium chloride, and this supporting electrolyte is chlorination
Aluminum；Wherein, in the organic-magnesium electrolyte 30 of 1L, organic-magnesium electrolyte in this organic electrolyte 30
Mole number is 1.5mole and the mole Particle density of this supporting electrolyte is 0.1mole；Furthermore, should
Negative electrode 20 includes one first negative electrode part 21 and a second negative electrode part electrically connecting with this first negative electrode part 21
22, this first negative electrode part 21 and this second negative electrode part 22 are located at the both sides of this magnesium hardware 10 respectively.
Then, as described in step S2, noble gases are covered in the surface of this organic-magnesium electrolyte 30；
In the present embodiment, this noble gas is nitrogen.This nitrogen is protective gas, to prevent organic-magnesium electrolyte
Expose and be decomposed in atmosphere.
Afterwards, as described in step S3, under the operating temperature of normal pressure and 30 DEG C, adjust a power supply supply
The decomposition voltage of device, between 3V to 10V, makes this power supply unit provide 25mA/cm2Electric current density
90 minutes between this anode and this negative electrode 20, obtain a polished magnesium hardware 10 and
The magnesium metal of reduction, wherein, the magnesium metal of this reduction is located on the surface of this negative electrode 20.
In the electrochemical polishing method of the magnesium hardware of the present embodiment, when decomposition voltage puts on this
When between anode and this negative electrode 20, the protruding parts meeting on the surface of this magnesium hardware 10 as anode
Aoxidized first and be dissolved in this organic electrolyte 30, so that the protuberance on the surface of metallographic specimen
Position is eliminated, and then obtains a magnesium hardware 10 with flat surface, i.e. this polished magnesium
Hardware 10 processed.Wherein, the protruding parts on the surface of this magnesium hardware 10 can be oxidized and dissolved
When, magnesium ion (Mg can be discharged2+) in this organic electrolyte 30, this magnesium ion can move toward this negative electrode 20
Dynamic, and form the magnesium metal of reduction in the surface of this negative electrode 20, thus recyclable with further with.
In the present embodiment, the polishing of this magnesium hardware 10 is electrochemically to complete, except
Save beyond time and the manpower to be manually polished required consuming, so that this magnesium hardware 10 is had
There is uniform finish.
Embodiment 2
The electrochemical polishing method of magnesium hardware of the present embodiment and the magnesium hardware of embodiment 1
Electrochemical polishing method generally with.Difference between the present embodiment and embodiment 1 is as described below.
Refer to shown in Fig. 3, Fig. 4, in the present embodiment, this magnesium hardware 10A is a blood vessel
Support, this intravascular stent is a cylinder with netted barrel, and using this intravascular stent as anode, and should
The first negative electrode part 21A of negative electrode 20A is arranged in the inner side of this magnesium hardware 10A, this negative electrode 20A
The second negative electrode part 22A be sheathed on the outside of this intravascular stent.Wherein, this magnesium hardware 10A by
Magnesium tin alloy is made, and on the basis of the entirety of this magnesium tin alloy, the content of magnesium of this magnesium tin alloy is 95wt%,
The Theil indices of this magnesium tin alloy are 5wt%.
In the present embodiment, this magnesium hardware 10A is the cylinder with netted barrel, its shape phase
When complicated and fine.The present embodiment is electrochemically polished to this magnesium hardware 10A,
Moreover it is possible to there is complexity and essence to this in addition to saving time and the manpower to be manually polished required consuming
The magnesium hardware 10A of thin shape is polished, and makes this have the magnesium system gold of complexity and precise shape
Metal elements 10A has uniform surface.
Based on above-mentioned, the present invention is polished to magnesium hardware by electrochemical polish mode, with
When can reach save with the time being manually polished required consuming and manpower, be applied to complexity and fine
The magnesium hardware of shape and the advantage reclaiming magnesium gold metal.
Certainly, the present invention also can have other various embodiments, in the feelings spiritual and its substantive without departing substantially from the present invention
Under condition, those of ordinary skill in the art work as and can make various corresponding changes and deformation according to the present invention, but
These change accordingly and deform the protection domain that all should belong to appended claims of the invention.
Claims (9)
1. a kind of electrochemical polishing method of magnesium hardware is it is characterised in that wherein include following
Step：
One anode and a negative electrode are positioned in an organic-magnesium electrolyte, this anode is a magnesium hardware；
And
Apply a decomposition voltage between this anode and this negative electrode, to obtain a polished magnesium metal structure
Part；
Wherein, this organic-magnesium electrolyte includes a solvent and an organic-magnesium electrolyte, and this solvent is selected from
The group of following composition：Ether, oxolane, 2- methyltetrahydrofuran and methyl cyclopentane ether, and this is organic
Magnesium eletrolysis matter is selected from the group of following composition：Methyl-magnesium-chloride, ethylmagnesium chloride, phenyl-magnesium-chloride, bromine
Change alkoxyl magnesium and alkoxy magnesium chloride.
2. magnesium hardware according to claim 1 electrochemical polishing method it is characterised in that：
This organic-magnesium electrolyte includes a supporting electrolyte, and this supporting electrolyte is aluminum chloride.
3. the electrochemical polishing method of magnesium hardware according to claim 2, its feature exists
In：In the organic-magnesium electrolyte of 1L, in this organic-magnesium electrolyte the mole number of organic-magnesium electrolyte between
Between 1.0mol to 2.0mol, and in this organic-magnesium electrolyte supporting electrolyte mole number between 0.05
Between mol to 0.15mol.
4. the electrochemical polish of magnesium hardware as claimed in any of claims 1 to 3
Method it is characterised in that：On the basis of the entirety of this magnesium hardware, this magnesium hardware contains
The magnesium of more than 90.00wt%.
5. the electrochemical polishing method of magnesium hardware according to claim 4, its feature exists
In：This negative electrode be rustless steel, the al member of the aluminum containing more than 99.90wt% or containing 99.90wt% with
On stannum stannum component.
6. the electrochemical polish of magnesium hardware as claimed in any of claims 1 to 3
Method it is characterised in that：In the step being positioned over this anode and this negative electrode in this organic-magnesium electrolyte and
In apply this decomposition voltage between this anode and this negative electrode to obtain this polished magnesium hardware
Comprise between step：The step covering the surface in this organic-magnesium electrolyte for the noble gases.
7. the electrochemical polishing method of magnesium hardware according to claim 5, its feature exists
In：In the step being positioned over this anode and this negative electrode in this organic-magnesium electrolyte and in this electrolysis electricity of applying
It is pressed on and comprised between the step of this polished magnesium hardware with obtaining between this anode and this negative electrode：Cover
The step covering the surface in this organic-magnesium electrolyte for the noble gases.
8. the electrochemical polish side of magnesium hardware as claimed in any of claims 1 to 3
Method it is characterised in that：Described applying this decomposition voltage between this anode and this negative electrode, with obtain this through throw
The step of the magnesium hardware of light comprises：
Under the operating temperature of normal pressure and 30 DEG C to 40 DEG C, apply this decomposition voltage and 25mA/cm2Extremely
50mA/cm2Electric current density between this anode and this negative electrode, to obtain this polished magnesium metal structure
The step of the magnesium metal of part and a reduction.
9. magnesium hardware according to claim 7 electrochemical polishing method it is characterised in that：
Described applying this decomposition voltage between this anode and this negative electrode, to obtain this polished magnesium hardware
Step comprise：
Under the operating temperature of normal pressure and 30 DEG C to 40 DEG C, apply this decomposition voltage and 25mA/cm2Extremely
50mA/cm2Electric current density between this anode and this negative electrode, to obtain this polished magnesium metal structure
The step of the magnesium metal of part and a reduction.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510472215.8A CN106435706B (en) | 2015-08-04 | 2015-08-04 | The electrochemical polishing method of magnesium intravascular stent |
| PCT/CN2016/093029 WO2017020832A1 (en) | 2015-08-04 | 2016-08-03 | Electrochemical polishing method for magnesium metal members |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510472215.8A CN106435706B (en) | 2015-08-04 | 2015-08-04 | The electrochemical polishing method of magnesium intravascular stent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106435706A true CN106435706A (en) | 2017-02-22 |
| CN106435706B CN106435706B (en) | 2019-02-26 |
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ID=57942456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510472215.8A Active CN106435706B (en) | 2015-08-04 | 2015-08-04 | The electrochemical polishing method of magnesium intravascular stent |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106435706B (en) |
| WO (1) | WO2017020832A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108193260A (en) * | 2018-01-26 | 2018-06-22 | 北京大学深圳研究院 | A kind of magnesium alloy blood vessel rack processing of surface polishing and auxiliary body |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113042975B (en) * | 2021-03-08 | 2023-07-28 | 沛县盛玛特新材料研究院有限公司 | Treatment method for improving surface quality of medical metal stent and medical metal stent |
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| US4801363A (en) * | 1987-01-05 | 1989-01-31 | The Dow Chemical Company | High purity alkaline earths via electrodeposition |
| CN1784512A (en) * | 2003-03-05 | 2006-06-07 | 环球爱奥尼克斯公司 | Electrodeposition of aluminum and refractory metals from non-aromatic organic solvents |
| CN1860257A (en) * | 2003-09-27 | 2006-11-08 | 阿鲁米纳表面技术有限及两合公司 | Electrolyte for the galvanic deposition of aluminum-magnesium alloys |
| CN102337580A (en) * | 2011-09-21 | 2012-02-01 | 合肥金盟工贸有限公司 | Ion liquid polishing solution for electrochemically polishing magnesium alloy and preparation method thereof |
| CN103173785A (en) * | 2013-04-16 | 2013-06-26 | 中国科学院青海盐湖研究所 | Method for preparing magnesium metal through electrolysis by using novel magnesium deep eutectic solvent |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6835300B2 (en) * | 2002-09-13 | 2004-12-28 | General Electric Company | Electropolishing solution and methods for its use and recovery |
| CN101591799B (en) * | 2008-05-30 | 2011-04-20 | 比亚迪股份有限公司 | Electrolytic polishing solution of magnesium alloy and magnesium alloy surface polishing processing method |
| CN102140671B (en) * | 2011-04-07 | 2013-05-01 | 上海交通大学 | Electrochemical polishing method of degradable magnesium alloy endovascular stent |
| CN103938262A (en) * | 2013-01-23 | 2014-07-23 | 汉达精密电子(昆山)有限公司 | Magnesium alloy electrochemical polishing solution and method of processing magnesium alloy with the polishing solution |
| CN104073868B (en) * | 2014-06-18 | 2016-08-31 | 郑州大学 | A kind of electrochemical process for treating being applicable to magnesium alloy intervention apparatus and auxiliary equipment |
-
2015
- 2015-08-04 CN CN201510472215.8A patent/CN106435706B/en active Active
-
2016
- 2016-08-03 WO PCT/CN2016/093029 patent/WO2017020832A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4801363A (en) * | 1987-01-05 | 1989-01-31 | The Dow Chemical Company | High purity alkaline earths via electrodeposition |
| CN1784512A (en) * | 2003-03-05 | 2006-06-07 | 环球爱奥尼克斯公司 | Electrodeposition of aluminum and refractory metals from non-aromatic organic solvents |
| CN1860257A (en) * | 2003-09-27 | 2006-11-08 | 阿鲁米纳表面技术有限及两合公司 | Electrolyte for the galvanic deposition of aluminum-magnesium alloys |
| CN102337580A (en) * | 2011-09-21 | 2012-02-01 | 合肥金盟工贸有限公司 | Ion liquid polishing solution for electrochemically polishing magnesium alloy and preparation method thereof |
| CN103173785A (en) * | 2013-04-16 | 2013-06-26 | 中国科学院青海盐湖研究所 | Method for preparing magnesium metal through electrolysis by using novel magnesium deep eutectic solvent |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108193260A (en) * | 2018-01-26 | 2018-06-22 | 北京大学深圳研究院 | A kind of magnesium alloy blood vessel rack processing of surface polishing and auxiliary body |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106435706B (en) | 2019-02-26 |
| WO2017020832A1 (en) | 2017-02-09 |
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